Machine for inserting fastenings.



, F. L. MACKENZIE.-

MAGHINE FOR INSERTING FASTENINGS. APPLICATION FILED NOV.29, 1911.

1,070,272. Patented'Aug. 12 1913.

' UNITED STATES PATENT o FIoE.

FRED

L. MACKENZIE, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO'UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NLW JERSEY.

MAGHINE FOR INSERTING FASTENINGS.

Specification of Letters Patent.

Patented Aug. 12, 1913.

I Original application filed February 8, 1909, Serial No. 476,718. Divided and this application filed November I 29', 1911. Serial No. 663,014.

To all whomz't may concern:

, Be it known that I, FRED L. Maolinnzm,

a citi'zenvof the United States, residing at 1 Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Inserting F-astenings, of which the following description, in connection with the accompanying drawings', is a. specification, like reference charactors on the drawings indicating like parts in the several figures. v

This invention relates to machines for inserting fastenings and particularly to fastening feeding mechanisms 'for use in machines for 'msertlng previously formed fastenings,

machines of this type being usually pro vided with a raceway down which the nails or other previously formed fastenings gravltate into proximity to the inserting mechanism, and a rotating hopper or other means for keeping the raceway filled with fasten: ings.

When a machine for inserting previously formed fastenings is to be operated at high speed, itis important that the fastenings be uniformly-positioned in the raceway so that the separating mechanism will always'deliver -a fastening to the inserting mecha nism. It is furthermore important that the raceway be supplied with fastenings as rapidly as possible to avoid the necessity for making the raceway unduly long. Various devices have been proposed and have been employed for insuring the proper delivery of the fastenings'to the raceway, and a number of these have been comparatively satisfaetoryfin operation.

One of the most common types of mechanisms for causing the nails or other fasten-' some time owing to the failure of the clear-- ing device to dislodge a misplaced nail.

Having regard to the difliculties above pointed out and to the desired ends to be attained, I have discovered that a rotary raceway clearer which has imparted to it an intermittent motion of variable speed is most eifective in keeping the receivlng end of the raceway clear and in insuring uniform positioning of the fastenings in the raceway. In the illustrated preferred embodiment of the" invention the intermittent operation of the-raceway clearing mechanism is obtained through the use of a Geneva stop mechanism. Although it will be understood that, in its broadest aspects, the invention is not limited to the employment of this particular mechanism, in view of the superior results obtained by the peculiar motion imparted to the clearing wheel by the Geneva stop mech- .anism, it is my intention particularly to claim the use of this mechanism in combination with a rotary raceway clearlng device. In the accompanying drawing is shown a broken side elevation of so much of the nail supplying mechanism of a loose nailing machine as is necessary to illustrate the appli-' cation of my invention thereto, one of the hoppers being removed to show the nail receiving end of the raceway.

- .Upon a shaft 208, which is illustrated and more fully described in my .co-pending appli-- cation Serial No. 47.6,718, filed February 8.

1909, of which application the present application is a division, is mounted a pinion 240 which meshes with an annular gear 242 formed upon one of the hoppers, whereby when the hoppers are operated there is imparted thereto a continuous, as distinguished from an intermittent, rotating movement, the nail feeding mechanism herein shown being intended to feed nails to a double raceway and comprising, as more fully described in: the co-pending application of (lreorge Goddu, Serial No. 476,649, filed February 8, 1909, a hopper upon which the annular gear 242 is carried and a second hopper drivenfrom said first-mentioned hopper. The shaft 208 has also attached to it a pin wheel 244 of a Geneva stop mechanism. The counter shaft upon which the raceway clearer 238 is mountedhas attached to it the star wheel 246 of the Geneva stop mechanism. The pin 2,48 upon the pin wheel 244 entering successively the slots 250 in the star wheel 246 effects at each rotation of the the upper end of the raceway, since the blow which it gives the misplaced nail is very tinnous movement of a constantly rotating clearing Wheel. Moreover it Will be noted that the movement of the clearing Wheel Will be of varying angular velocity, the velocity being greatest at about the middle of the movement. This variable speed movement is also especially effective in keeping the rereceiving end of the raceway tree from misplaced nails.

quick and much more 'etl'ective than the con- Having describedmy invention, What claim as new and desire to secureby Letters Patent of the United States is i A machine of the classdescribed having,

in combination, a raceway, a hopper, means for continuously rotating said hopper, a

toothed wheel for clearing misplaced 5118- tenings from the upper end of said raceway, and means for imparting to said toothed wheel intermittent rotary movement or" varying' angular velocity comprising Geneva stop mechanism inter 'iosed between the hopper rotating means and said toothed Wheel. In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

' FRED L. MAOKENZIE.

Witnesses:

Onesrnn E. Romans, LAURA M. Gooomoen.

fiopies'of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

